SNS COLLEGE OF ENGINEERING
DEPARTMENT OF CIVIL ENGINEERING
ENVIRONMENTAL SCIENECE AND ENGINEERING
MULTIPLE CHOICE QUESTIONS
UNIT II
ENVIRONMENTAL POLLUTION
1. Which of the following is an air pollutant?
(a) Nitrogen
(b) Carbon dioxide
(c) Carbon monoxide
(d) Oxygen
2. Which of the following is a secondary air pollutant?
(a) Ozone
(b) Carbon dioxide
(c) Carbon monoxide
(d) Sulphur dioxide
3. The environmental lapse rate is found to be:
(a) – 6.5°C/km
(b) 8.6°C/km
(c) 6.5°C/km
(d) 5.6°C/km
4. During Inversion:
(a) Temperature increases with altitude
(b) Temperature decreases with altitude
(c) Temperature remains constant
(d) None of the above
5. Among the following, the only secondary pollutant is:
(a) Sulphur tetraoxide
(b) Sulphur dioxide
(c) Ozone
(d) Sulphur tetraoxide
6. Which of the following groups of plants can be used as indicators of SO pollution of air?
(a) Epiphytic lichens
(b) Ferns
(c) Liver worts
(d) Horn worts
7. Which of the following on inhalation dissolved in the blood hemoglobin more rapidly than
oxygen?
(a) Sulphur dioxide
(b) Carbon mono-oxide
(c) Ozone
(d) Nitrous oxide
8. Smog is:
(a) A natural phenomenon
(b) A combination of smoke and fog
(c) Is colourless
(d) All of the above
9. The major photochemical oxidant is:
(a) Ozone
(b) Hydrogen peroxide
(c) Nitrogen oxides
(d) Peroxyl Acetyl Nitrate (PAN)
10. Which of the following are likely to be present in photochemical smog?
(a) Sulphur dioxide
(b) Photochemical oxidants
(c) Chlorofluorocarbon
(d) Smog
11. Which of the following devices is suitable for the removal of gaseous pollutants?
(a) Cyclone separator
(b) Electrostatic precipitator
(c) Fabric filter
(d) Wet scrubber
12. Which of the following air pollution control devices is suitable for the removing the finest
dust from the air?
(a) Cyclone separator
(b) Electrostatic precipitator
(c) Fabric filter
(d) Wet scrubber
13. Air pollution from automobiles can be controlled by fitting:
(a) Cyclone separator
(b) Electrostatic precipitator
(c) Catalytic converter
(d) Wet scrubber
14. Taj Mahal at Agra may be damaged by:
(a) Sulphur dioxide
(b) Chlorine
(c) Hydrogen
(d) Oxygen
15. Gas leaked in Bhopal tragedy:
(a) Methyl isocyanate
(b) Potassium isothoiocynate
(c) Ethyl isocyanate
(d) Sodium isothiocyanate
16. BOD is:
(a) A measure of the organic matter presents in water
(b) Usually less than COD
(c) Biochemical oxygen demand
(d) All of the above
17. BOD/COD ratio will always be:
(a) Equal to 1
(b) Less than 1
(c) More than 1
(d) None of them
18. Biochemical Oxygen Demand measures:
(a) Industrial pollution
(b) Air pollution
(c) Pollution capacity of effects
(d) Dissolved O2 needed by microbes to decompose
organic waste.
19. Excess fluoride in drinking water is likely to cause:
(a) Blue baby syndrome
(b) Fluorosis
(c) Change in taste and odour
(d) Intestinal irritation
20. Fluoride pollution mainly affects:
(a) Kidney
(b) Brain
(c) Heart
(d) Teeth
21. Which of the following is a non-point source of water pollution?
(a) Factories
(b) Sewage treatment plants
(c) Urban and suburban lands
(d) All of the above
22. Septic tank is:
(a) An aerobic attached growth treatment system
(b) An aerobic suspended growth biological treatment system
(c) An anaerobic attached growth biological treatment system
(d) An anaerobic suspended growth treatment system
23. Disease caused by eating fish inhabiting mercury contaminated water is:
(a) Bright’s disease
(b) Hiroshima episode
(c) Mina-mata disease
(d) Osteosclerosis
24. Which of the following is not a marine pollutant?
(a) Oil
(b) Plastics
(c) Dissolved oxygen
(d) All of the above
25. Noise is:
(a) Loud sound
(b) Sound of high frequency
(c) Unwanted sound
(d) Constant sound
26. Sound becomes hazardous noise pollution at decibels:
(a) Above 80
(b) Above 30
(c) Above 100
(d) Above 120
27. Which of the following is a major source of thermal pollution in water bodies?
(a) Sewage treatment plant
(b) Solid waste disposal sites
(c) Thermal power plant
(d) All of the above
28. The highest heating valve is of:
(a) Garbage
(b) Rubbish
(c) Hospital waste
(d) Industrial waste
29. The highest moisture content is in:
(a) Garbage
(b) Rubbish
(c) Hospital waste
(d) Agricultural waste
30. Which of the following is a likely characteristic of hazardous waste?
(a) Ignitability
(b) Corrosivity
(c) Reactivity
(d) Any of the above
31. High level radioactive waste can be managed in which of the following ways?
(a) Open dumping
(b) Composting
(c) Incineration
(d) Dumping in sealed containers
32. Biomedical waste may be disposed of by?
(a) Incineration
(b) Autoclaving
(c) Land filling
(d) Both (b) and (c)
33. Which of the following is a biodegradable organic chemical/substance?
(a) Plastics
(b) Oils
(c) Pesticides
(d) Garbage
Answers:
1. (c); 2. (a); 3. (a); 4. (a); 5. (c); 6. (a); 7. (b); 8. (b); 9. (c); 10. (c); 11. (d); 12. (b); 13. (c); 14.
(a); 15. (a); 16. (d); 17. (b); 18. (d); 19. (b); 20. (d); 21. (c); 22. (d); 23. (c); 24. (c); 25. (c); 26.
(a); 27. (c); 28. (b); 29. (d); 30. (d); 31. (d); 32. (d); 33. (d).